如何解析下面的json。
[
{
"products": [
{
"description": "USB2.0. 1000 dpi, Double Lens Technology. Black
(Red,Orange.Green.Grey),White(Red,Orange.Green,Grey)
<\/p>",
"product_id": "36",
"name": "New
MP-770",
"product_code": "MO018",
"images": "productimage\/36",
"price": "59900",
"weight": "1.00"
}
],
"num_page": 1
}
]